Framing-machine



1. B. DUNKIN.

FRAMING MACHINE. I APPLICATION FILED JAN- 7, 1919- v 1 356,49O. PatentedOct. 19, 1920;

2 SHEETSSHEET 1.

MIMIW/I," mm

avvuemto'c J. B. DUNKIN.

FRAMING MACHINE.

APPLICAHON FILED MN. 7, 1919.

1,356,490. Patqnted Oct. 19, 1920.

2 $HEETSSHEET 2.

UNITED STATES PATENT, OFFICE.

JOHN BYRON DUNKIN, or BELLINGHAM, WASHINGTON.

FRAMING-MACHINE.

To all whom it may concern:

Be it known that I, JOHN at Bellingham, in the county of Whatcom andState of Washington, have invented new and useful Improvements inFraming- Machines, of which the following is a specification.

This invention relates to woodworking machines, and aims to provide aportable machine of simple construction for cutting mortises in heavytimbers, being especially useful in the framing of ships.

Another object is to provide a device of this character which may beadjustable to cut mortises, such as square or inclined mortises, theadjustment permitting of use of the device in various positions.

A further object of the invention is to provide a machine of thischaracter which is power operated, the operator or workman controllingthe machine so as to cut the mortise at a proper depth or degree.

Other objects and advantages of the in vention will appear as thefollowing description is read in connection with the accompanyingdrawings.

Figure 1 is a side elevation showing the machine in position for use.

Fig. 2 is a sectional view on the line 2-2 of Fig. 1.

Fig; 3 is an enlarged detail sectional view on the line 3-3 of Fig. 2. I

Fig. 4 is a plan view illustrating the machine in position for cutting amortise different from that shown in Fig. 1, and

Fig. 5 is an elevation of Fig. 4.

Referring to the drawings in detail, like characters of reference denotecorresponding parts throughout the several views.

In Fig. 1, the machine is shown as used for cutting a mortise, thebottom and one end wall of which is inclined. The ma-' chine comprises acutting member 10, which is mounted upon one end of a rotary shaft 11,the latter being driven from a suitable source of power through aconnection 12, which is coupled to the shaft as shown at 13 and may beconnected to any suitable source of power.

The cutting member 10 includes a hub 14 which is secured upon the shaft11, the said hub having cutting blades 16. The blades 16 are spirallyarranged and are disposed longitudinally with respect to the hub 14, sothat when the hub is revolved Specification of Letters Patent.

Briton Don- .KIN, a citizen of the United States, residing the bladeswill make a shearing cut in the I permit of its free adjustment ormovement therein. The bearing 17 is also provided with a transverselydisposed opening 19 through which passes a guide shaft 20 cylmdrical incross section. The mounting Patented Oct. 19, 1920. Application filedJanuary 7, 1919.' Serial i i of the bearing permits of free adjustmentof the cutter longitudinally of the shaft 20 and also permits of freeadjustment of the shaft 11 within the bearing 17, while the manner ofmounting the bearing upon the shaft 20 enables the cutter to be tiltedto any desired angle.

emovably mounted upon each end of the guide shaft 20 are standards 21,each comprising a bar 22 which is provided at one end with a curvedextremity 23 having an opening 24 therein for the reception of,

the shaft 20. Mounted upon the standards 21 are guides 24, by means ofwhich the said standards are secured upon the timber.

These guides are movable upon the standbe moved to regulate the distanceof the shaft 20 fromards, so that the latter may the base of the timber,so as to regulate the inclination of the mortise.

In F igs. 4 and 5, the machine is shown applied to cut a square mortise.The structure of the machine is the same as that described "inconnection .with the preceding figures, the difference being in themanner of applying the machine to the timber. As

shown in Figs. 4 and 5 the standards 22 are disposed longitudinally ofthe cut and upon the sides thereof and are held by means of guides24 onthe timber to be out.

The blades 16 are provided upon their outer ends with transverse cuttingedges 25, disposed at right angles to the longitudinal cutting edges, sothat the member 10 will act to square up the mortise.

It is believed that from the foregoing description and the accompanyingdrawings, the construction, operation and advantages of the inventionwill be apparent. The invention is susceptible of'various changes in itsform, proportions and minor details of construction and the right isherein 113-:

served to make such changes as properly fall within the scope of theclaims.

appended Having described the invention, What is claimed is:

l. A mortising machine comprising a supporting frame including spacedparallel side members and a transverse bar, connecting said members,means for securing the frame in position, a bearing mounted'up on thetransverse bar and capable of both pivotal movement and movementlongitudinally 0f thebar, a shaft rotatably and longitudinally movablein said bearing and a cutting member carried by the shaft.

2. A mortising machine comprising a supporting frame including spacedparallel side members and a transverse bar connect ing said members,means for securing the frame in position, abearing member having a shaftreceiving opening therein and an opening disposed transversely of theshaft receiving opening for slidably and pivotaliy "receiving thetransverse bar, -a

shaft positioned in the shaft receiving opening and capable of rotaryand longitudinal movement therein and a cutting member carried by theshaft.

In testimony whereof I affix my signature.

JOHN BYRON DUNKIN.

